Towards Collaborative Query Planning in Multi-party Database Networks

Abstract

Abstract. Multi-party distributed database networks require secure and decentralized query planning services. In this work, we propose the collaborative query planning (CQP) service that enables multiple parties to jointly plan queries and controls sensitive information disclosure at the same time. We conduct several simulated experiments to evaluate the performance characteristics of our approach compared to other planning schemes, and also study the trade-off between information confidentiality and query plan efficiency. The evaluation shows that when sharing more than 30% of query planning information between coalition parties, the CQP service is able to generate reasonably efficient query plans. We also outline potential improvements of the CQP service at the end.

Specification and Enforcement of Access Policies in Emerging Scenarios

“…Emerging scenarios where data need to be exchanged and shared among different parties are represented by coalition networks. A coalition network is a distributed system characterized by a set of providers that wish to collaborate and share their data to reach a common goal (e.g., coalition networks often combine organizations cooperating for military, scientific, or emergency purposes) [38] [39]. Each provider P in a coalition network owns one or more relations, as well as one or more servers for both computation and data storage purposes.…”